20554330501 has 8 divisors (see below), whose sum is σ = 20592053280. Its totient is φ = 20516638032.

The previous prime is 20554330499. The next prime is 20554330519. The reversal of 20554330501 is 10503345502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20554330501 - 2¹ = 20554330499 is a prime.

It is a super-4 number, since 4×20554330501⁴ (a number of 42 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20554330501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20554330591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1678266 + ... + 1690468.

It is an arithmetic number, because the mean of its divisors is an integer number (2574006660).

Almost surely, 2^20554330501 is an apocalyptic number.

It is an amenable number.

20554330501 is a deficient number, since it is larger than the sum of its proper divisors (37722779).

20554330501 is a wasteful number, since it uses less digits than its factorization.

20554330501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15155.

The product of its (nonzero) digits is 9000, while the sum is 28.

The spelling of 20554330501 in words is "twenty billion, five hundred fifty-four million, three hundred thirty thousand, five hundred one".